Single-head attrition-mill.



' J. S. SORENSEN.

SINGLE HEAD ATTRITION MILL. APPLICATION FILED JUNE 10. 1912. RENEWED MAR. I0419 l5. L1$6M33 Patented July 13, 1915.

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Patented J uly 13, 1915.

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J. S. SOREN$EN.

SINGLE HEA D ATTRITION MILL. APPLICATION FILED JUNE I0. 1912- RENEWED MAR. 10.19I5.

1 i% @$$9 Patented half 13, 1915.

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SINGLE HEAD ATTRITION MILL. APPLICATION FILED JUNE 10, 1912- RENEWED MAR. 10, 1915- 1914690331 Patented JOHN S. SOFIENSEN, 0F MUNCY, PENNSYLVANIA, ASSIGNOR TO SPROUT, WALDRON 8!) COMPANY, OF MUNCY, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

SINGLE-HEAD ATTRITION-MILL.

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I Specification of Letters Patent.

rammed July is, 1915.

Application filed .Tune 10, 1912, Serial No. 702,739. Renewed March 10, 1915. Serial No. 13,500.

To all whom at may concern:

Be it known that 1, JOHN S. SORENSEN, a citizen of the United States, residing at Muncy, in the county of Lycoming and State of Pennsylvania, have invented certain new and useful Improvements in Single-Head Attrition-Mills, of which the fol-. lowing is a specification.

My invention relates to attrition mills of the type having asingle runner or rotary grinding element adapted to coact with a stationary or fixed grinding element. This style of mill is especially adapted for hulling cotton. 1 v

An important object of this invention is to obviate the necessity of tramming, by which much time is lost in the operation of the mill and undue wear is caused on parts thereof. I I

Another object is to provide convenient access to the grinding elements for repairing or renewing the same.

To these ends, the runner casing of the mill is made with a detachable portion carrying the stationary grinding element. The

base of the mill is provided with an extension on-which the detachable portion of the casing is supported in erect position by a brace at the bottom of the said detachable portion when the same is' disconnected from the casing. The grinding elements may extend partially into the deliveryspout which is formed in the base, and said spout in this construction may be formed with an offset to provide clearance for the part of the stationary grinding element which extends into the same when said detachable portion is moved away from the casing in order to obtain access to said grinding elements. Tramming is obviated by providing 0. posite axially arranged abutments on the ase between which the casing, bearings for the runner, detachable portion of the casing and brace for the latter may all be fittedv and thereby maintained in proper alinement. Said detachable portion and brace are also adapted to slide between said abutments when disconnected from the casing and base, whereby the proper fit of these movable parts to the stationary parts of the mill ma be readily and accurately secured.

The invention will be first hereinafter more particularly described with reference to the accompanying drawings, which are to be taken as a part of this specification,

and then pointed outin the claims at end of the description.

In the drawings, Figure 1 is a central vertical longitudinal section of an attrition mill constructed in accordance with this invention; Fig. 2 is an elevation of the end of the mill carrying the stationary grinding element; Fig. 3 is a detail elevation of the detachable portion of the casing; Fig. -l-. is a central vertical section thereof; Fig. 5 is a detail perspective view of the base of the mill; Fig. 6 is an enlarged fragmentary section of a portion of the base including one of the abutments; Fig. 7 is a similar view showing a modified form of abutment, and Fig. 8 is a vertical cross-section of the base taken through the delivery spout and looking toward the off-set therein.

The base 1 may be of any suitable shape for supporting the superstructure of the mill, but -as shown is generally rectangular in form and is provided with the delivery spout 2 opening through the same, and abut ments 3 arranged on the upper surface thereof. One pair of said abutments may be made continuous to extend along one of the bearing supports 4 for the runner shaft, the'casing 5, the detachable portion 6 of the latter, and the brace 7 for said detachable portion. .Another pairof abutments may be provided for the second or outer bearing support 8 for the runner shaft The inner the .face 3 of each of the abutments may be arranged at right angles to the upper surface of the base, as shown in Figs. 1, 2, (5 and 8, or it may be inclined outwardly to some extent, as illustrated in Fig. 7 In either form, the abutments will effectually hold the operating parts of the mill in proper alinement when the latter are fitted between said abutments and fastened down to the base by bolts 9, or other suitable means, and as a result tramming will be unnecessary. v

The runner 10 is suitably mounted on the end of the runner shaft 11 which may be driven by the band pulley 12. As the details of construction of the bearings 13 carried by the supports 4 and 8, respectively, and in which the runner shaft is journaled, constitute no part of the present inven tion,

herein. Said runner is housed in the casing 5 and carries the rotary grinding member 14.

they, need not be specifically described carried by the detachable end portion 6 of the casing and is disposed so as to present its working face to the corresponding part of the rotary grinding element. Said detachable portion may be secured to the casing by bolts 16 passed through ears 17 arranged at intervals around the periphery of said parts, and the detachable portion may be further secured by the bolts 9 which fasten the brace 7 to the base 1. When these securing means are removed, the detachable portion may be moved or slid along the base between the abutments and away from the casing a sufiicient distance to permit access to the grinding elements for repairing or renewing the same. It will be noted that when the detachable portion is disconnected and moved away from the casing, the brace 7 serves to support'the former in an erect position independently of the latter. By reason of the fact that said detachable portion and brace are fitted bet veen the abutments, the reassembling of said detachable portion with the casing requires no adjustments or tramming to bring the stationary grinding element into proper alinement with the rotary grinding element.

As illustrated, the runner and detachable portion of the casing may extend partially into the delivery spout 2. \Vhen the mill is so constructed, it is preferably to form an offset or step 18 in the side of said spout toward which said detachable portion approaches as it is moved away from the casing. The provision of this ofiset allows clearance for the part of the detachable portion of the casing which projects into the spout so that said detachable portion may be moved the required distance from the easing without making it necessary to unduly enlarge said spout. It will' be understood that the feed chute 19, which is connected to the detachable portion of the casing, may be carried with the latter when it is moved away from the casing or reassembled'therewith. The specific construction of said feed chute need not be describedin detail because, like the bearings for the runner shaft it does not constitute any part of the presentinvention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a machine of the character described, the combination with a base having opposite axially arranged abutments, of a runner casing supported on said base and having a detachable portion also supported on said base and fitted snugly between said abu ments, said detachable portion being adapted to slide along the base between the abutments when disconnected from the casing, whereby tramuung is unnecessary, a runner in said casing. and a grinding element carried by said detachable portion.

2. In a machine of the character described, the combination with a base having opposite axially arranged abutments, of a runner, a casing housing said runner and having a detachable portion fitted' on the base between said abutments and adapted to slide between the latter when disconnected from the casing, a brace arranged at the base of said detachable portion of the casing and also fitted and adapted to slide between said abutments, and a grinding element carried by said detachable portion.

3. In a machine of the character described, the combination with a base having a discharge chute, ot' a runner casing mounted on said base in communication with said chute and having a detachable portion supported and adapted to slide upon the base when disconnectedfr-om said casing, said detachable portion extending partially into the chute, the latter having an offset therein providing clea "ance for that part of the detachable portion which projects into said chute when said detachable portion is moved away'from said casing, and a grinding element carried by said detachable portion.

4. In a machine of the character described, the combination with a base having a discharge chute, of a runner casing mounted on said base in communication with said chute and having a. detachable portion supported and adapted to slide upon the base when disconnected -fro1n said casing, said detachable portion extending partially into the, chute, the latter l'iaving'an arcuate ofi'set therein conforming, to and providing clearance for that part of the detachable portion which projects into said chute when said detachable portion is moved away from said casing, and a grinding element carried by said detachable portion.

In a machine of the character described,

the combination with a base, of a runner casing secured thereon and having a detachable.

portion, a runner in said casing, a bearing for said runner, a grinding element carried by said detachable portion, and parallel axially extending abutments on the base, said bearing and detachable portion of the casing being fitted between said abutments.

.6. In a machine of the character described,

the combination with a base, of a runner cascasing supported on said base and having a disconnected from the casing, whereby tram- 1e detachable portion also supported on said ming is unnecessary. base and fitting snugly between said abut- In testimony whereof I aflix my signature, ments, said detachable1 ifortioncarrying 1a in presence of two Witnesses.

grinder and supporte or a considerabe longitudinal distance between said abut- JOHN SORENSLN ments so as to. maintain the disks parallel under all conditions and adapted to slide along the base between the abutments when Witnesses:

PAUL W. F isnnn, MARY BURNS. 

